Run results for: JavaScript spread operator vs Object.assign performance

Run details:

User agent: Mozilla/5.0 (Android 6.0.1; Mobile; rv:86.0) Gecko/86.0 Firefox/86.0

Browser: Firefox Mobile 86

Operating system: Android 6.0.1

Device Platform: Mobile

Date tested: 3 years ago

Test name	Executions per second
Using the spread operator	688196.1 Ops/sec
Using Object.assign	1247944.0 Ops/sec

Tests:

Using the spread operator
const firstObject = { sampleData: 'Hello world' } const secondObject = { moreData: 'foo bar' } const finalObject = { ...firstObject, ...secondObject };
Using Object.assign
const firstObject = { sampleData: 'Hello world' } const secondObject = { moreData: 'foo bar' } const finalObject = Object.assign(firstObject, secondObject);